I'd suggest the Kanger Aerotank or the Nautilus Aspire if you are looking for a no-nonsense clearo with replaceable coils and adjustable airflow. I have a couple of other RBAs (Kayfun 3.1, AGA-T2, Kraken Clone) but even though I can rebuild them, I seem to be falling back to the Nautilus Aspire a lot if I'm not dripping. The flavor from it's not bad at all. I bought an Aerotank for my boyfriend and he seems to like it (and I've heard a lot of good things about it) but he too seems to use his Nautilus when he wants a clearo. Yeah, I just asked and he said he likes the Nautilus better, but the Aerotank gives pretty good flavor too. The Nautilus does hold more (a full 5ml). He's expounding now - he says the Aerotank feels sturdier, the flavor is about the same with both of them, but he likes the Nautilus a little better.
Sorry for the frustration and that you wound up backsliding a bit!